[PyQt] How to precisely control position/size of QDockWidgets

R Johnson (Gmail) ps16thypresenceisfullnessofjoy at gmail.com
Tue Apr 22 23:18:52 BST 2014

Thank you for your helpful reply.

QMainWindow.setCorner() does do what I wanted. I should have read the 
documentation more carefully about that, but couldn't find anything 
relevant on the QDockWidget page.

Regarding specifying "the default width or height of the dock windows," 
I have attached another screenshot showing what I mean. The red 
rectangle shows the current width of the dock window, and the green one 
shows what I want the width to be. The default width wastes a lot of 
space in my layout. I have tried calling:


on the QTreeWidget that the dock window contains, but this has no effect.

I also tried:

     self.treewidget.resize(150, self.treewidget.height())

but that didn't work either.

If I make 150 pixels the maximum width of the dock window, then it is 
the width I want it, but it can't be made any wider. I don't want to 
make 150 pixels the maximum (or minimum) width of the pane, just the 
default width. It also seems like the policy that I would want for 
QSizePolicy.setHorizontalPolicy() is QSizePolicy.Preferred, which is 
already the default one.

I'm still confused about this. How can I tell Qt the default width (or 
"best size", in wxPython terms) of this dock window?

Thank you.

-- Timothy

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